I believe AND headcannon that when James started to like Lily he used to send her love letters just to fuck with her but when it got serious and he started to actually fall in love with her, he wrote her poems about how her hair was the exact shade of the winter fire that burned inside his soul for her.
Just a reminder that Lily and James are soulmates. <3
Destined to meet in every universe. <3
Born meant for a collision. <3
They’re a rare phenomenon. <3
There’s only a few other occurances of similar phenomena but they’re not soulmates - Tonks’ patronus changed to Remus, Snape’s patronus was Lily. That was closer to obsession than the pure cosmic twins that Lily Evans and James Potter are. It could not have been a shock to anyone to learn that a world-changing prophecy is made about their son.
They were always going to be someone important to each other, they weren’t chained to a pre-written romance. Their romance is entirely their own, and it’s unimaginable how much love they had because it’s something otherworldly.
If they were to be separated by death, neither Lily or James would ever fall in love again. They’re that cutesy.